A method includes outputting an alert corresponding to an information item. In some implementations, the alert is a sound. In some implementations, the alert is ambiguous (e.g., the sound indicates several possible information items). The method further includes receiving a speech input after outputting the alert. The method further includes determining whether the speech input includes a request for information about the alert. The method further includes, in response to determining that the speech input includes a request for information about the alert, providing a first speech output including information about the alert.